Changing layout of the list field
October 17th, 2014
I’m afraid there isn’t a way to alter the overall layout of the List field, or embed a List field within a List field.
You can use the gform_column_input_content hook to change a column so it uses an input other than a drop down. The example on the link shows how you can change it to a textarea.
Please note there are some input types which are not supported such as radio, checkbox, select with the multiple attribute and file.